Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '87d4b98ac487dea6203640a486f3a5a0e7a37e9ebcd20032324130896eafd1bc' 
  AND token = '8tM2NHoOzKL9c1UxTiZONje/3nhWb0Ma8HI5kGr69uw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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