Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '63c099d0570ea739e566f55ee247c21cc5270677c208e5832b457588ef45566b' 
  AND token = 'aojgAIBPBjtDv2S5EgDB4yWCGZRZ07ScFyr8D1yoRsU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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