Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc7cb58404e88776559affbab59bf21c21a80b85e464d344ae863dc4ed6f4f79' 
  AND token = 'yQ7H978It4Ces2/hBwFffBmgKbMFvhBQ8txkzJVLHyg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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