Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '855d2d35f16f60013d0133c34aea9a6567217663e425c6bbb454ed1703380247' 
  AND token = 'lmu0FAUPC7CfFhJXedQYKBeHnA4Tj0rvqknSfAdt8Es=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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