Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '40d31b62ed57f56d622b24878eaab6614865ee56598387dc3e79b079fad41386' 
  AND token = 'cZTNCrRueyrsDUHF7bsKL4zN1X3tz09G/J4aW8uaLaQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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