Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3e8a9464331fce78f5f7f67cb0818d3c52f88c5a1b31753f3f35099f6c369ef7' 
  AND token = 'vp3m87KLX7i/mtHiak+yVkWr77uhbhHvraHWlrGTWks=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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