Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '037c11d7f8c74aa92d1df228003087954c2d183e5bbdc7db918f2adbb37f53d6' 
  AND token = 'F8n8rF5QQPv+ht/P0biouUNviftnOwwUs2dd6vFI1iA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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