Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '664815a0f69ae4056ab953d77d590a06bdcdffc4ddb51755318d3f86f7640273' 
  AND token = 'xnIbMi0hWCdPyU9dpQeBHdl+ziAjvPbG5edJ487mx0M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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