Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c0b3b263331a88350ea4ce94ced64e45008a81eb7e848ca101eb93b33c587055' 
  AND token = 'iroYBg1VCNlhlomHUBazpR/yGHyGgZDero/80u4Bz6E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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