Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ca16122d0b6a714cf02740f9443ec43a731e494e3509caade0f86ce9ae0b2197' 
  AND token = 'IZrGUMQXGFP9L9VpDHfXOR4rsm1xGiOYVDveU/zKSeQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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