Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '05f3e80691bb8ccea85d96004f409c5e5125a73e7b1941dbec00aee85c8d8568' 
  AND token = 'x78rFub21Y/vzt4eTz+yzqa5G7ll1dnBo1zcc5DzgIg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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