Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '70638bbbfa03f6d3c08bf56dacae9557fe863883cad150b812f000bf8ce30433' 
  AND token = 'jCX9c5OYmzcufWgxiutLmeMdNwSy9x+HcPuONj+KUao=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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