Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fa13447e48690d2c19f41cd10b3f0a896d19a343bc94db6a4a0e2ff77655db1f' 
  AND token = 'fb7xcDBDxjfUEDI49UmbVA8+EXFNXYHvwmX00wQj4lo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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