Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'fec4c6498882bd41e7a236743d29b696b4b3e5d624b82726dd733c2ef88818f2' 
  AND token = 'dJYtMwzLKyD8yq/b6i/YXEVhHwael4tvT0s5dfkk5tw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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