Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '18863b72907c1ad8cb825022d611beb543d4e614363d549ab8ae160fef305617' 
  AND token = 'VIZ1IvG6zFf275oW6PoIMD2UpyDVs91B86TN+HixWJw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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