Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'aefecf9d42605a7be0c498955e62784c7b0a0c792188dc07ce97dadc45f2c95d' 
  AND token = '2X3z7C8A2ELWL0aUQ3rOXeymM8aj7Yi9kJQ3xR0tNBo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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