Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93bb79044798c0e9bce8cfe5265895f4db7e4664b932011b362b5fd1e22d6ace' 
  AND token = 'lS0WhonY8jh4vFhJbi9xBTuIGC8SGQurb28m5ZMJn28=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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