Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5d37baac03b9ed85afeba787a6cab1116aae20769b0667fd3ebdc32088c39f1d' 
  AND token = '3q5dElrm1tywzXbj5HqFMFF/ES34MLe0sLBW99c1ZU8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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