Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bed2ca4070541150c160bf9af36c7137b39601317dcfad115e0ba1dff2b06e8a' 
  AND token = 'GCosXBADObA9KBQez/9XBk0paffmRgy/EVkg1D4GGDE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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