Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c02a703cd78ff3d5318c9017ef82453135aede56118f369bd39ba47040c507b1' 
  AND token = 'vPJ+QQxiJQCnw8bPSn+HpJHSoK5N4tIs7pZpkSUbnpg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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