Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8995bf0870f61d5d7c555fbddfe5412a1d94da78406beb32f6f755322631200c' 
  AND token = 'Ig2CUUu5LEKaSBPdrA5IDY/zSzdeT95ITV14wbYupS4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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