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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7599da09ab19563b62447886516a4710631c843d00928fc37c5f765ae9f0183b' 
  AND token = '50e0/2A74C7CiY0UMNw2tI6Mv9kq+Mfm2GwEXGUsh04=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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