Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63046543009605df44fd021d4e2bd6170c39bd3ae842240593a566bedb0b0ce3' 
  AND token = 'sfUJ+FEeLfZ10zrGJwgNa/cIEn+G5S9Gqt0j+41C/p4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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