Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f65b19c0ab5603d45b9fc5e99001c08664a4e542ee77f755f363d70fd3ce5b11' 
  AND token = 'O6/od5Dmqf4GWXxqlvZrn7QTM1LjP6i584sWzLBAACE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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