Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '007e045a26eab0baded8629d767881c83f7466774309f85ec1baced7c029ad10' 
  AND token = 'G8qS5ArdIcoq4LzdW18caTgIcJ5RKSoq1dwxnPito4g=' 
  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"
    }
  }
}