SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '323e80177bf7e2d39aa425926096c0876efac5056c49bcce5cc8a27931d72715' 
  AND token = 'ZQuSuvP3sQuWnPHZBcf/BXKiMF7KJ4wD7kkWglEQgUc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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