Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1db9c5311b926c07a11ae14fcf94e8a4560f611445f8aa1bd239d5e57e01dcc0' 
  AND token = 'G8Akq6F36qCe5sc3HiSv9PaLMbeaTLwB0QXs1PLzMbs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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