Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9a804ded1545633397bc84b50077818a19d4e940768a2a18e26177f565cc28c0' 
  AND token = 'O7Jxkc324ICbRl/8f84b1Pj5J6U00VWOxsaykVDtR+4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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