Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cbab0032dcf4938be62915a053821a853c446ce79b671144375a199fbc0d1912' 
  AND token = 'j23e4laoD/lk/GYLsYyrGn0PR1fjcSVoRHtinimwx6k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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