Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5411016eeed9d1da29d586b9c2e91eb8e909724e40894e997a7df538f146c7f9' 
  AND token = 'AC1VNRZdkMcjdbNgRj1Drov9BEUhMzG8Z8n+FMjB/R0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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