Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '73789ee54c82da4a053c8c7d06e65d5d10fe10ebcab7c1affba55ad9a1f97fc9' 
  AND token = 'gTFo9L0JR2XexfAbOkI/hAFzglumhVApAj9CPy725Qg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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