Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8d6daa190c94e02e88cab5a23f66e5419700fa63b44b62a196f31226beb1d4a2' 
  AND token = 'GhFYtDo0xgt20gewqVDswe7nMmU1/uKdStK9Dx8ChW8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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