Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '98fce5581bfc122c7ab5795b0420d57459bf63f30b781eab524401d3b6b3cbc5' 
  AND token = 'oD1EKwGy0CK+6HYO2qEh6IpRydxMRBk56h85q/E/8WU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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