Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2eb6544e443b06ac868b592f0d12c203d907644bdaf2f2fe8fb27617eef38f6f' 
  AND token = 'MkAazMo97Xb0GyccYGUEtX4BJKhanwiXHyo4GPseXV4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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