Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '179f4b717b0d06bcc818e4b2e5bf822ed82aa339d0c9ee479e019e8417e6d332' 
  AND token = '5EAQePagJBDqpKpRtqFG3qEhkwhe1RDB8fSykkeRABM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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