Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '04f69b7520d2a5dfb972d816b2a81c7a1dca4eeabbbb9994539b10536f425821' 
  AND token = 'HxqaA7eEtO4eLgUaG3vGramrGpX1XDOnbhr7Zhcvpjk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}