Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '74597bdcf0c1e2a31ef9bbe7fb67f2279e7d212e9ec7f894d006d311a475fdf0' 
  AND token = 'iBpPdwuXcPwY/nxXW4xtJTQ3ZwbpeW3jytg9T58WZns=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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