Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1e7716b6832b5c5299239599893775c0f650e75c18f77d9d280b02e8b3c722bf' 
  AND token = 'TRiJ+6hUwjUIf/TOuIKc8Rhvk7zACacH4iVcoNMkl5g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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