Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0364d2c8f019c8eb06840c16fac8ae50a7b3f0986aa0b08d9057cf817ccf47d3' 
  AND token = 'gQHNLOdu/Hjjag4/o45zZCWv5XJah9KvnaXKse9N9GU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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