Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1da24d4ec38261304b363fca4d2f78620a6e59f1c47e5fd03d43a12c099e9f34' 
  AND token = 'rDtpyZc5WCtxIqO6GcMoMZrmkJZEvjZurX5BEObPwyU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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