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SELECT 
  1 
FROM 
  tmall_lock_keys 
WHERE 
  key_id = '5494c337426eb785addb9a55aa5c31fdd2376300619cbaa52dff82e67b997547' 
  AND token = 'ftbIBZZ1UuORe7japk4BV8Gt5Re1O8rP/9bhuypnxAA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00796

JSON explain

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