Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '46257df84a07c126def936e01f899c28da4e01736e026331028e8e29db70f2d5' 
  AND token = 'G6GD6srqkWY0wVAlm0/EAMeNogjGnc2WI/RzMfu+hUo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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