Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bea8a4802c1afb00e851c05ede0d6a592e5760b9b42f1b8cf75acefdf4fa24cf' 
  AND token = 'CvFXph1CJq336sAk+f/hfhfP6Sp2rH6rs+LWm3bPujw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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