SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aba072e17125c6d357d48de00b249e3b1f422b1b490f74ad0e6e790945f25e22' 
  AND token = 'sQBUQLQcEZ/Kn3umEEYBqnP8Fc+GwHXSGwtpZ42JZNI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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