Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f04fa9e9ab0b175e30a96d6cd9bb276ec8cce9fddcdeaf44a311cc0561315883' 
  AND token = 'zT+IvacSjq3SY61gdEBE3YxR12BCYXvyMsxi1t5B14k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00060

JSON explain

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