Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eea2c5f08f84a6ddd4ca749e4f48daef84aaa4044b988069080323f903fa85a8' 
  AND token = 'D2Z6j/OZbSmkmGusgw4zp+QPwTfD4yWSpIw0JSEchH8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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