Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0b0ee2d4eaf7a685ec5dcc3529e5062097a7c64f9fc7b622527a308fc8839d00' 
  AND token = 'nPojq1NcD0X1m94jVLOega3Vj0Qcmsjc04Y/s+foUXc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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