Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a9db10060749544903102d925d487a61a1797185df8bbce5a90c5d6a1630a005' 
  AND token = 'RcxA5K4+Lo52dgmCDjirdLuM4U9FM8VQVl9Fgy0fS28=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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