Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dc63bfac864a61acfa871a521048a25292f40f37715483602546e6a323efe444' 
  AND token = 'ByrAIoZZLzNl3CnakoAiFb7In43CXcKM8v3RHVo9RXY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}