Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '82d847b345798003d84061c2c6b945cbd1befc3dba7334cab1268425bdfa21b5' 
  AND token = 'wKB2LurTp5LW7/DebGsz4oD6wj6AU55WytSxJgpyxhc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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