Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e01aea5e58f9c89306e405f17356fe73a524a8b6696a8ee4a727703395b37a2' 
  AND token = 'QL2s49/8aOdIbB65nHDVOBDqNXVyDfSMatzwAY1yDvA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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