Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4a054c7c04210901be3807ae6b3031621204d767f2636b25273963ef025e7880' 
  AND token = 'ZKrykNK3tSigPyT3+6mK1lMNgazFTb2+upsOlrBnYs4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}