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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95dd9948de8912aef391b767aacce6f234d568ee0789cbb142e2543ea72e5eb1' 
  AND token = 'Pi7bK9eCtYMck8n9N/JSgnOLBTR9aZ2vQaQ+8Ku9Dk8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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