Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd60ac1a25383702bb8180e99534174637e2a44ee1d27a444480aa6450092b377' 
  AND token = 'hm4bZIxRmNrOX7v0TDxPaZlIuUIrkAQJrQNdihlb9Ak=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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