Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '91ee26001b017bf027e418f752b5540b2d0f4616012e591145d823329db630b7' 
  AND token = 'CgGlI6W/T1VEi5RepYKX/lYpPI5Z2Y5M7DizACx+w+A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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