Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0bc9f075b20c5d2d6af88ccc4f2feb2fbdeb583b6ebb0f275ce7d0a945190ccf' 
  AND token = 'PMij5xvPleiiApngDrLIr/gXhcA/49XNkb2B0wQx/HY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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