Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '77757559d19cead3c17e51d52d80ffb3623a6d19093d2b5803e01d2ca1fb8e28' 
  AND token = '80VNhxSDMq6iWvGoB07kCEubEAKrwk+27wf/0RhxQuI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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