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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '034c7417184457c54f6344c6732a55e80cc0d2435285632546758e3b72627c7a' 
  AND token = 'WxAWfzvED/KFa4nNOZ4PmH++E8euAXKT6S5lL3eYtzo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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