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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '130b05b1e98e7093fd5de28387e3c56cea65a08c6d6688980123a5a8b0f72f14' 
  AND token = '4hk2IkVUOFP3Z8fMeyifgmnVl5bRsySp8K48md8LGMA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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