Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '42b2e6ad2e47abcbad86c7c8579d444feb0d0ec7a680e080fbface2a32b335f0' 
  AND token = 'dp/WKLoOfaM8bk/Q5MRzPMqVJ45/gnvv+oU0pE02H/s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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