Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5639d08beda4b053d59b466cbaa11019ffef319908c8899ecab4282af0c9bd97' 
  AND token = 'jPbORc2xFGa1Pksy8yQZiZOwtN8WPagq7DHWOx1V/qI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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