Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '698f223107c0da31d55afa9dd061177989699d0857f24d7f38d245c6c22b5948' 
  AND token = '04YeAOptI14gotc98Odhwh+IS+ZlIKD0NwHOohfr40A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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