Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'eafe668c4ec9294668f7ad8f7f70ae7a9f02013a82341dc6b94716eaab7a5d49' 
  AND token = 'G0mJLmaItcvobLUydS0iykzwlwxR52gs06wldiKSDEc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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