Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '799cde9d84924b1e81973df1af7f2375f6d06b11696456baf004237150a98fe9' 
  AND token = 'zdsCFpFXe2tQEiAt3jtOLx19y/oFvZWk8dM6UGZzepY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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