Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '250056a14f767686cf88c3e5801910bc4b0560ad44bbc0a8eeec90b5ed400c02' 
  AND token = 'Q4WwcWIKV+empL+z6XDDh+Y6LcFS4UKpwWuLwFMqkmE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}