Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '60f88ee8a8bc4bfbcda13038a7398de6bb2840c143bc13ee0ec871c9b2af415e' 
  AND token = 'PzpFA4coPkYFlBVPmAdLBkfqfFI8WZeku7IMJAQj1DE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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