Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ccd08b84ee603c183c66b83e2875ff50e30f824799049420ba9c51aced6dbec7' 
  AND token = 'yoepQ2iOmxLilNjus5VY3G0xLrszX1RdomyMvR1f6mc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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