Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4bff4a5adcbcb77aa98e4ab8f0b84337932a4452a3497d747494b0f6b470ee14' 
  AND token = 'wCeZJZ8PuB74vShEGBdOAsQ2G1bJ4pTnyeez2Eln9wo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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