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SELECT 
  1 
FROM 
  tmall_lock_keys 
WHERE 
  key_id = '23d84ddcbe97bf3a5092cbe9163ca5f1030ffd922ae6db1092955dcd33a296b2' 
  AND token = 'j4bpZS+1Ct3XZhBFZTrI5hq0Yg3TZ64bhN3GgNG25QI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00771

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}