Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd1145abc7123df82d8ff07d77203567426221dad25d7e5d309ec49f0434df066' 
  AND token = 'FFxW8hTZjdgUECJLizvB0b5wcZ5MvDBNhBos5uOMeqE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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