Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7b72d07a3e70a091c29f96385311f2088b04c93debf170caecd24943679da2c3' 
  AND token = 'dXrBc5TDLx8p+wyp6gvMlfwE82ruDXlQcczXVWg8hBU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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