Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bfb51b59cf5bc9aa9b34c60de42f69912cabac9a3f3cadf2661cc5622984e0df' 
  AND token = 'WicP5Cgk6DnS6FDVKQ95BOGYgBfSk+LUW/0xKnN5ZYY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

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