Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e6e4b207169725d9d2cd0cbacd2440e46ff1def571b10a50fae5f441436b53ec' 
  AND token = 'LjShZyYdD+whCiLgnrr8ZoS400/2FPt5SdHK9iehzN8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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