Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '74a57fb52496b7a92d761fd9b2538614ada061a34a34aee58d2826acd01ad2ef' 
  AND token = 'YCp8X4nuh5JL5iPAcAgaV0gb7vUPoR9kLQsMgLQJu18=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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