Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6da7d9f6f779d9f7d25b62705b882a8c2e89879006cc43015ba58f8e9c08bf85' 
  AND token = 'Pm4jXIRe9R3i9riYu/1jmXQcPW2Qw+funnpd+YGiN94=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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