Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3f0561196715cf9a85e1dcbf80d5af76dadc0b29b8c7138738ff67566757e16e' 
  AND token = 'bbaByGOqfYicGoAptj2INrSWAe+5vOVizrWCCvcCjts=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}