SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3580116f5dcc8375af6c1bbdeb6645a50e90cf6f4dcb44a875f7eb27bf2e8242' 
  AND token = 'zZOBS8Iv2EPyP3tRqIgokUdYrCl4E3ksGkPpCujJHOQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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