Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f764cb3c2b2e0a5310e44277136a549805689556f62166bf29ac2d97335e4e61' 
  AND token = 'GJcjsURjgRq5d23thb40OD2m1438CP+Hq7vlyNyLseY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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