Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '65e3f1374c6b4a257a466c200beb4d907a53be29c45cb1161293216ee3d1b28a' 
  AND token = 'tA3Seqp/g2TQjFjF4FN2JmF7aT6Ez1gHn2cHBSzlAHU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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