Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '35f56883793166bd282a7e617faef3d1ba55313263a8d3a49ba7566069cd43be' 
  AND token = 'bWzU+uV6PDGVUKytldKdcWhhC0KPUE1rj7KsrFzC8RM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00076

JSON explain

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