Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f2464b277761a810875c5e05c960968f97d4eaca0c880c4b614fef731e6d0bfb' 
  AND token = 'C8xQh79E04fBZvNWrzVqENl27QlfHkl0g5eArZyd6R4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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