Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5de5a8387bec1b3b401782966458c07b441523aed571bf84a21e68b3f8302aba' 
  AND token = 'UaLEeXa2+di8mzqX1AAc/zveJTxo2pLDnEHmMHHwuHA=' 
  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"
    }
  }
}