Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '36b712e7786a482d59d2a884d3726294a7487633673c7a333f4b14897f609b28' 
  AND token = '4smulGp50ryfSc72EBAgx1cWSi5/S7ULkXV3o/tOhWo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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