Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b72dfc0512ded6c85437f793a2f7104a2ae6b313b185493b4794bdc06638c48b' 
  AND token = 'KW0ZFBDRlONwu950LGkO/13DsWSLxSVFj8z4K3lcUDc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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