Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '484ed84e4af16efbf8d10c96a6db1f87375454f707a67561ed28305b099aec7d' 
  AND token = 'ob8vqVCksv2rFWlUYe2G1tuFCL2nwWtILCRzbRJL1xM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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