SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '533172b8834eafeb19fd0fd977785921d2c0b346c3be3c2195dc0b9fcc83ce59' 
  AND token = 'e9rtyO3QVukg+B+7FlD6G9/TI4Vh1ZW+YBgniJ62RRM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00054

JSON explain

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