Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dc1d6ec97a02bb5474cc9a64e8d6096386dc76b35a9fd9197568dde294182626' 
  AND token = 'lcS+L2ndcXF7+WMEX8Svkh1RCOTidiW/21uJZFgjuBs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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