Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f297e53d2e9ea5263e7e9f92d544b5bf7f24ea9fa42a9f2487623e0737a39db1' 
  AND token = 'Q4ohacIWRiXXPzlkAjbrJ8RR1O7NPc4cyOMKj1N9xaw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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