Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2fb4acdc1a54491204b7e5a38161bc56cb6e57647e5af79a53852bd3149b9911' 
  AND token = 'cNEBIfb5MpdyW7KW6y5S4PlsyxJoTuYJIUiX3MAdPQM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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