Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '52ac90f6c80a2fff94041e8927ffbf561aa23a5224315188ece65e0b25902762' 
  AND token = 'dFhfB72Wl8IclvBk8ZowHBPPx1N+p+BKRhclY7Cv7WA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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