Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8d68a4941b325930b2ecbcd1bd3388d3576cd57bcd3ed1a38773ca691164bcda' 
  AND token = '+88KUnabW0AlSSEXC173m+TsoRJVtei/eRkXCH0KsaM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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