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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1662cc2d5a6a4f322aa56c3ef39e26199f6b1327c0b2d2ae1897722f4c18b75f' 
  AND token = 'n7LeyEOKva8Cmg0TJTArr1nsmstBpyjD3ZIgA8DXeq8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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