Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ee07499cabd792b3ad454153f847bb9b821531fb6239b964a8ac1df7e1d53ff2' 
  AND token = 'qjiUyB2+itIuTbjskwniYFRc+Wapdc/b+6YQxDWawY0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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