Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c56430ac1f1577dba71042068b19706d5d77e76ab33209e8ef34dab09731704e' 
  AND token = '2fJtp5V6FZDijC0b3Mg4ZZJOVSIMTOgPD7eJ4yxFLco=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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