Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '97d20e42022c13a39f213606c8da3845edca221b564dc63944411384dbf9bfb9' 
  AND token = 'hFY38rpda1UY9Glxgy33YWKtWGMD9bFuR2OwopY5lSU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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