Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd9374c029fa71c52a0a448326e82e7b2e8acb67a652a73944fac87818640d335' 
  AND token = 'eV9pZ+7AFxjGJDZxLNQGwPaW+cm3d8kp4PdJfXUa2jQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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