Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '228a31eb54ce321df82e005f74e3e683c42d6ba6284478a363fe5db4961edd59' 
  AND token = 'fnQwFsMhUBxTduUhLqLwN5LUTHe0eCHPX51V1pbth6c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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