Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95fee742594554392b5de8491418cd4926ee85f40bbe3bb0e0e52ef561f3921b' 
  AND token = 'Y0xSFELo1WB1osogHj0IpQWyLbwvdwxZQtRkcwT9OIU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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