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SELECT 
  1 
FROM 
  tmall_lock_keys 
WHERE 
  key_id = 'f16b365c241701a24ef3d544e90ce0fcd47fae8e954de6efcd5ccf5a6ef80a2d' 
  AND token = 'QOdLOCSt8YB8AVq79sBHJGToqZ9U6w0sWt2cRTmmpXQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00763

JSON explain

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