Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e964e6d91ae2d04868f94c702bc39078fb0ac3df2584f9c7e54365f6d8a2530d' 
  AND token = 'v1ngeFEX2718z9qC/xWx3KtRe0WaRrccHGvVkiR98dQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

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