Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '62e7031085be47d9cff8665ba0db0f39af9b45acdbf892fc1c8ebfd72fd0fd08' 
  AND token = 'bE3oWcA9ByjAYrnHWL2lj1UWAiFFkufLjnlRRvWg+4w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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