Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8e1d0810aa423e0e10dc9f76dd0b381909fe34826260071bfdbc7d8e3c5e1e26' 
  AND token = 'TAavW00AVnDx8gQINXCdBnC9oDFZDUBV1JEniSujDgQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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