Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f23a02622df8dd531531e13edb39c8b08c27db4016151d4d47c0b2d74fdf047d' 
  AND token = 'zEEhUBrRMv29XI4rptfLGoHnZB71cmD3JkfT/Zt1jBU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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